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o. l, t r glatten gratta flatrnt @time HENRY .'l. BRIGGS, OF CLARKSBURG, M SSAGH USE/l" 1S.

Letters Patent No. 70,402, dated November 5, 1867.

IMPROVEMENT IN SPINNING-JAGKS.

T0 `ALL WIIOM IT MAY CONCERN:

Be it known that I, HENRY B. ISRIGGS, of Clarksburg, in the county of Berkshire, and in the State of Massachusetts, have invented a new and useful Improvement in Spinning-Jacks; and I hereby 4declare that the following is a full, clear, and exact description thereof, which will enable those skilled in the art to make and use the same, reference being had to the accompanying drawing, forming part of this specification, in which drawingi Figure I, sheet 1, is a side view partly iu section of so much of a jack as it is necessary to show in order to illustrate and explain my invention.

Figure 2 is a plan thereof.

Figure 3 is a rear elevation.

Figure 4, sheet 2, is a side view partly in section, which shows a modification.

Figure 5 is a plan thereof, and

Figure 6 is a rear elevation.

Similar letters of reference indicate corresponding parts.

This invention relates to spinning-jacks, and consists in devices for causing the carriage to 'be drawn in by the aid of the racebelt; the belt-guide being moved far enough toward the fast pulley to bring the belt partially upon it, and cause the race-shaft to receive more or less rotary motion, in order to aid thespinner in` winding the yarn that has been spun or twisted, thereby relieving him of much of the labor of running the carriage in. v

By a modification of my invention, hereinafter set forth, I accomplish the Asanne thing by moving the fast pulley itself toward the belt, letting the belt-guide remain stationary meanwhile. I bring the belt into partial engagement only with the fast pulley because I do not desire to drive the race-shaft at this time at full speed. By bringing the belt partially on the edge of said pulley, the belt is allowed to slip somewhat on its edge, and consequently produces only a moderate speed'of the shaft, (not here sho\vn,) whose rotation accomplishes the winding of the yarn on the bobbins, and the consequent drawing in of the carriage as the winding proceeds.

Observing the figs. 1, 2, and 3, the letter A designates the headef a spinning-jack, and B1 the driving-r shaft; D is the ordinary shipper arranged in guides over the shaft on the back part of the head. E is the belts guide, permanently xed to4 the shipper, and moving with it so as to take the belt from the fast pulley C to the loose pulley C', and oz'cc versa. The shipper is moved the proper distance, at the proper times, toward the right by a lever, G, which is hung in a vertical position upon a fulcrum-piu, H, secured to a convenient partl of the head, on which pin it is vibrated, as hereinafter set forth. On the upper part of the lever G is a cam, F, whoseV bevelled side is toward a shoulder, g, formed on thc under side of the shipper, as seen in g. 3. The lower end of lever G is connected to a rod, I, whieh'extends along the carriage-track to its front end, or as far in that direction as is necessary; the forward end of said rod being connected to the vertical arm of a bent lever, M, which is pivoted to a standard, N, whose foot has a longitudinal slot, seen in fig. 2, to allow the standard to be adjusted to different positions on the fioor for spinning hard or soft twist. A cord or belt may be substituted for the rod I, if preferred. The upper part of lcvcr M extends backward in a general horizontal direction, and is composed of two inclined planes of Vabout equal lengths, joined at their vertices, so that the higher portion of said horizontal part of the lever is at or near thc middle of its length. The lever M is operated by the carriage L, whose axle" passes over the horizontal portion of said lever and depresses it, thedoublc inclinations ofthe lever allowing the carriage to pass in either direction without hindrance.

The place of the carriage-axle is indicated by the pin 0, seen in figs. 1 and 2. If preferred, the said lever M can be operated by a projection from any convenient part of the carriage instead of by its axle. The lever G has a horizontal arm or shoe, J, 'which is arranged so as to project forward from it at a point near to its fulcrum, as shown in fig. 1. The forward cud of the shoe has a bevelled face that incliues downward, so Vthat it may be acted on by a projection, K, arranged on the carriage in such a manner that when the carriage runs in and approaches near to the head, the projection will force the arm .I downward,.and thereby vibrate the lever G so as to bring its upper part forward away from the shipper. The downward movement of the shoe J is limited by a stop,A I), which projects from` the frame below the arm or-shoe J, as seen in Iig.1.

- The standard N is here shown adjusted so as to bring the lever M in the proper relations with the axle of thecarriage for the operation of spinning hard-twist yarn. When thejacl: is spinning hard twist the cam F is brought against the shoulder g ofthe shipper, (so as to bring the belt on the edge of the fast pulley,) while the j carriage is in the act of backing oif. To accomplish this result I adjust the standard N so as to bring the angle or vertices of the inclinations on lthe horizontal portion of lever' M beneath the axle O of the carriage 'when the latter has got to the endof its outward movement. Fromvthis position the carriage is drawn inward alittle distance, two or three inches, more or less, by the strain produced' by the twist en the y'arn that has just been spun in running out, the extent of such inward movement depending on the hardness of the twist. The horizontal portion of the lever M will be momentarily depressed by the axle of the carriage as thc latter gets to the end of its outward movement, and the cam F will bel moved toward the shipper, but will not act upon it,

because at this stage the shipper will not have been moved (by the devices that change it from the fast t-o the loose pulley, already referred to,) far enough to the right todoring the shoulder g within reach of said-cam F, and consequently the weight of the arm or shoe J is left free to restore the levers G and M to their former positions, where the latter will be in readiness to be again depressedwhn the axle of the carriage next strikes it. As this inward movement of the carriage causes the yarn to kink, and some of it to wind on the bobbins, it becomes necessary to unwind and straighten the yarn before the carriage runs in. This is accomplished by backing off, as it is technically termed, or in other words drawing the carriage again outward toward the end of its track, by which movement' the axle O is brought back toward the lever M, whose horizontal part it gradually depresses as the axle rides over its ascending inclination to the vertex, whereby, through therod I, or other means which may be employed for connecting the parts, tho cam F is brought against the shoulder or other projecting part g of the shipper, so as to move the latter a little distance toward tho right, (observing fig. 3,) and bring the belt partially on the edge of fast pulley, or far enough to put the belt in motion, and through it the race-shaft, and thereby cause the yarn to 4be wound on the bobbins and the carriage to be drawn in toward the head of the jack. The degree of the engagement of the belt with the fast pulley is determined by the extent of the movement of the shipper by cam F, which is regulated by the adjustment of the several parts at pleasure.

The engagement of the belt with the fast pulley is not made complete, so as to' make the belt run at full speed, but is' only partial, so that the belt will be allowed to slip over the edge ofc the pulley while the latter revolves, so that the belt acquires only a low speed.

When the carriage has run in so far as to bring arm K up to the shoe J, the latter is depressed by the arm,

and the cam F is moved away from the shipper, which is then allowed to yield to those devices of the jack whose oice it is to move its belt-fork over' the loose pulley.' This olllee is performed in this example by the spring R,- seen in fig. 3. While the carriage is running in the cam F is prevented from falling away out of contact with the shipper by the friction between the shoulder g and the cam; said friction being suihcient to' counteract the weight of the shoe J and hold up Asaid shoe until the latter is depressed by the arm K of the carriage).

In spinning soft twist the axle of the carriage is allowedlto pass both inclina-tions of lever M,`so that when it stops it will be beyond'or forward of the lever, or over that portion of the lever which is too low to be acted on by said axle. Accordingly it is necessary to adjust the lever to a position a little inward from the position in which it is shown in the drawing. Such adjustment is made according to this example of my invention by changing the position of the standard N; the rod I, when a rigid rod is used, being shortened by means of nuts and screws or pins, or other devices used to fasten it to the lever M.

'When the carriage runs out in spinning soft twist, it passes over the lever M and depresses its horizontal arm momentarily; but said arm is raised again, after the axle O has passed its angle or the top of its inclina'- tions, by the weight of the shoe J, as before explained, the shipper-bar being under the control of the gear of the jack as soon as saidjack is thrown in gear, and consequently entirely free of the cam F; the belt4 being during this period on the fast pulley. When the carriage is started back the shipper-baul) is released and allowed to drop against the cam, causing the belt to move from the fast on the loose pulley, and as the shaft O passes over the lever M, in the backward motion of the carriage, it causes the b 'elt to shift from the loose partially on thel fast pulley so as to create the required friction; 1the pressure made on the shipper bythe spring It, or other device used to force it toward the left, causing friction enough between the shipper and the cam to hold the latter stationary until the carriage'has nearly reached the head, when the arm K strikes the sli-roe and frees the shipper. The saine result can be accomplished by moving the fast pulley itself, Ior by moving the driving-shaft so as tobring the fast pulley into partial engagement with the belt.

I have shown in figs. 4, 5, and 6, a modification of my invention, wherein the lever G is made to act upon and produce a slight longitudinal movement of the driving-shaft B instead of tlie shipper; the ordinary action of the shipper'not being interfered with in its connection with `tho clock orother parts of a jack. lh'e said driving-shaft B is so arranged in its bearings as to allow it to have a slight longitudinal movement when it is acted upon hy the lever G. 'A spring, R, is so applied to said shaft as to push it always toward the right,

vobserving iig. (i, and hold it by the force' of said spring in proper position for the usual changes of the belt at alltimcs when the spring is not overcome by the said lever.

'lhe lever G, which has the cam F at ,itsV upper end, as before explained, isi mounted loosely upon the driving-shaft next to the fast pullejgup'against which it is held by a collar, S, which'` is fixed on the shaft. The cam F, when thelever Gr is Wwf-ted, as h ereinbeforeexplained, comes against anyvxed object, which is in its path, and, by reason of'its angular or 'cam-'shaped side or other surface, causes theshnft B itself to he moved along with lever little distance toward the left, according to the degree of ungularity of thee-am, or vthe extent of its vibratie-mor both combined, thereby bringing the edge of the fast pulley C partially under the connecting device,.substantially as described.

edge of the belt. In this modification I have made use of the shipper for a bearing surface for the cam F to act against in order to produce the required lateral movement of the level G; the shipper at this time being held stationary, with its fork over the loose pulley, by a spring or other device which is able to resist a greater force than the power ofthe spring'R and the inertia ofthe shaft in its bearings.

The shipper has a slot or notch, T, cut onits lower edge, at a suitable point, to allow the end of the cam F to enter the notch. The side of the cam, as the lever G is vibrated, bearing against the right-hand edge ofthe slot, and causing the lever and the shaft to be moved'toward the left by reaction.

My improvement-can be further modified in its details and application `to jacks of different stylos without departing from the principle of the invention as `herein set forth.

What I claim as new, and desire to secure by Letters Patent, is-

l. The lever Gr, having a cam, I", at a suitable point thereon for acting against the belt-shipper, substan-` tially as described.

2. The adjustable standard N and lever M, in combination and arranged to operate with the carriage of a spinning-jack, substantially as described.

3. The combination of the adjustable standard N, lever M, lever G, and connecting-rod I, or an equivalent 4. The levers M and G, appliedto the shipper D or the driving-shaft of a jack for the purpose oi bringinr the fast pulley C into partial engagement with the race-shaft belt, substantially as and for the purpose above set forth.

The above s ecification sinned by me this tweut -eivhth day of Februarv 1867.

p n y J n. n. lnurses.

Witnesses:

DANL B. CHILDS, G. BERG. 

